Magnetic observations at Prague [Czech Republic], by Karl Kreil Tables of magnetic observations, with magnetic declination, magnetic intensity, and magnetic inclination [or dip] recorded at five minute intervals, twelve observations per hour, from 10.00am on 28 February to 9.00am on 29 February 1840; and from 10.00am on 18 March to 9.00am on 19 March 1840. Headed [p.1]: 'Magnetische Terminsbeobachtungen zu Prag am 28 u. 29 februar 1840', and an equivalent [p.3] for the March observations. With a list of observers [p.2]: 'Fritsch, Kreil, Kurunda, Leyer, Masac'. 28-29 February 1840